Available now at Gryphon:
A serious "bench tool" - the string winder crank that really works!
I'm making these things a few at a time, entirely by myself from raw materials so availability will continue be extremely limited.
UPDATE September 3: The new SMALL mandolin size is now ready, and will be on the order page in a day or so. I designed the driving end to fit closely on the tuner button with lots of clearance for the handle, for smooth and safe operation.
The MEDIUM guitar size is still sold out. I'll have some made before the end of the month. At this point there are fewer than ten of the LARGE left. Looks like I'll have a busy Labor Day. . .